Aquasoil

Also known as: ADA Amazonia, Tropica Aquarium Soil, Fluval Stratum, Landen Aquasoil, Brightwell FlorinVolcanit

Properties

pH effectlowers pH
KH (carbonate hardness)softens
GH (general hardness)neutral
Nutrient loadvery high
Ammonia release initiallyYes (cycle the tank before stocking)
Particle size1 to 4 mm
Longevity2 years before replacement / refresh
Cost tierhigh

How it affects the tank

  • Pre-loaded with nitrogen, phosphorus, potassium, iron, and trace elements: planted-tank specialists use it for rapid plant establishment without water-column dosing for the first 6-12 months
  • Releases ammonia for the first 2-6 weeks: must cycle the tank fishless before stocking, or use a heavy plant load to consume the NH3 as fertiliser
  • Acidifies the water (pulls pH toward 6.0-6.5 and softens KH), which suits soft-water community fish and most plants but is incompatible with hard-water species
  • Exhausts in 1-3 years depending on plant load; the granules eventually become inert and the tank shifts to a root-tab-dosed system

Care notes

Premium aquasoils (ADA Amazonia, Tropica) are the planted-tank gold standard but expensive ($40-80 per 9L bag, two-three bags for a typical 60L tank). Budget alternatives (Fluval Stratum, Landen) work but with less nutrient density and shorter longevity. Do not stir vigorously once placed; granules crumble and turn to mud.

Plants that work in aquasoil

73 aquarium plants in the catalog list this substrate as compatible.

Sources

Data drawn from: aquatic-plant-central, tropica-product-spec, ada-product-spec. Last verified 2026-05-13.

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Further reading